Electric Generator — Questions and answers

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How was lighting mostly done before the electric generator?

Choices

  1. By electric lights from voltaic piles.
  2. By gas, oil lamps, or candles. ✓
  3. By steam engines.
  4. By widespread illumination.

Answer: By gas, oil lamps, or candles.

From page 2

Before becoming a famous scientist, what was Michael Faraday's first job?

Choices

  1. A blacksmith's son.
  2. Sir Humphry Davy's assistant.
  3. A bookbinder's apprentice. ✓
  4. An electric motor inventor.

Answer: A bookbinder's apprentice.

From page 4

What kind of electrical response did Faraday's galvanometer show when the magnetic field was constant?

Choices

  1. A continuous, sustained flow.
  2. Nothing at all. ✓
  3. A powerful, steady surge.
  4. A dynamic interaction.

Answer: Nothing at all.

From page 5

What did Faraday discover was needed to generate electricity from magnetism?

Choices

  1. The change in the magnetic field. ✓
  2. The constant presence of a magnetic field.
  3. A static conductor in a magnetic field.
  4. Magnetic lines that cannot be cut.

Answer: The change in the magnetic field.

From page 6

What was the name of the first continuous electric generator Faraday created?

Choices

  1. The Horseshoe Magnet.
  2. The Faraday Disk. ✓
  3. The Continuous Current Coil.
  4. The Electric Spark Machine.

Answer: The Faraday Disk.

From page 7

What was the main advantage of alternating current (AC) over direct current (DC) for electricity transmission?

Choices

  1. AC was much cheaper to produce initially.
  2. AC lost significant power over short distances.
  3. AC was incredibly efficient for long-distance transmission. ✓
  4. AC could only be used for lighting, not motors.

Answer: AC was incredibly efficient for long-distance transmission.

From page 9